Fluid operated pump
US4705458A · kind A · utility
8Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1984 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Jun 12, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/143
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid operated pump comprising a housing including first and second cylinders. First and second pistons are rigidly fixed to each other and situated in their respective cylinders, the cylinders alternately receiving pressurized fluid for operating the pump. The pump includes novel valving means and novel seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.